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Finding the Fourth Proportional to 79,221.19, 118,830.51 and 19,250.14

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Solution

The fourth proportional to 79,221.19, 118,830.51 and 19,250.14 is: 28,874.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,221.19 : 118,830.51 = 19,250.14 : x
  2. Step 2: Convert to fraction form
    79,221.19/118,830.51 = 19,250.14/x
  3. Step 3: Cross multiply
    79,221.19x = 118,830.51 × 19,250.14
  4. Step 4: Simplify right side
    79,221.19x = 2,287,503,953.77
  5. Step 5: Solve for x
    x = 2,287,503,953.77/79,221.19
  6. Step 6: Final answer
    x = 28,874.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.